Door-frame, door, and adjunctive mechanism for air-tight compartments.



YATENTBD FEB. 13, 1906. S P. STEVBNSBN. DOOR FRAME, DOOR, ANDBDJUiEGTiVB MECHANISM FOR AIR TIGHT CDMPARTMENTS.

APPLICATION FILED mu 24,1901.

Y fiwevztor: WJW J '6 wi l? 4gb A PATENTED FEB. 13, 1905.

No. 812,377. V

S P. STEVENSON. DOOR FRAME, DOOR, AND ADJUNGTIVB MEUHNISM FGR AIR TIGHTGOMPARTMBIQ TS. urnwmmn Him JULY24,'19G1.

2 SHEBTS-BIjEET 2.

used. s e oser'a gmnme e for its object the fa. 'tybi iltrarie 'aiid s..PRIOE TEVEiiSON. OF CHESTER, PENNSYLVAHLA. noon- FRAME, noon. ANDADJUNCTWE mzcnnigsm roa AlR-TIGHT commmrm.

no. 812,377. I

Specification of-Letthrn intent.

Patented Feb. 13, 1906.

i guuinon m in, 24,1 1. Serial a. 00.5%.

Ad3unotive' Mechanism for Air-Tight-Com-' Partments, 9 h l jhifllowingis a. speeifi-i cation.'. m

This a e-Rebirth tested) apartments, .engiinoref igertioui from such spertments'jvithethe iesss dare-? off intr uQ g1endrenibYihg.-Qb eats: bytrblleyen'df suspended railway Witli'a! gl ih shqfprmqi e dqorl' 0 this'end this'invention' consists in an improved enlist-motioned; edjustgble5 door- Zas'hereine terd mjb di'mg rs andelosing them,

supendedf s'aiil endl gggsitiyeljgzeoimected meansoio eningseid Figure 1showsa I- 'irame and door in'elosedjpositioi i embodying this invention:Figsgshows'le side elevation thereof; Fi 3 shows n rear elevation there-.of. Fig.-;4; s ,ows a. yertieel seotion thereof; in closedposition;-F1g."5;: e-vertical section; thereof. in open. position} i 6shows I a; modified form in front idle'yatipn. Fig; F'- shows aneniargjront' view'ofthe meohena the linte e and the lowere'nds of the j'amhsii and b ext 1d downwardly below the uppgr surface of it 1e sili handare secured tothe so It by nailing themfi'lhe 'sill or threshnhfk;

extends laterally beyond the, dooiopeiiing in front oi-theiower ends ofthe casings yni'hioh areettaohiad thereto, and thus strengthened, so asto giupport the fulorums of extended hinges, (shown in Figs. 5-end 6,)such as are described," nd' claimed in my Letters Patent ,No. 647,5 6,dated April-17, 1900, and shown Q tinge shovnin the ee-i .hm'egrooved-atthe inner Si es,

0111 eieyetion of ii door the inner side, which rests against t on}, sothat the fei't opens to pass over. the no, closing over it in my LettersPatent No. 697,689, dated. April 15, 1902. r

in the jambs a and b are out grooves iend 3, into which are fittedblocks 1c and I, extendmg inwardly to within a short distance from thecenter of the doorway and having their front edges flush with those ofthe jembs o end'h. Grooves m and e are out in the upper sides of theblock I: end E, into which are fitted tongues o-end 3:, formed on blocksg geed-s; the'npp'er ends o'r'whieh ere fitted in ores 8 aud t,- ont intheunder side of the ei"'e.l The front faces or ed es of the blocks andland g end r are fins or infihe' same plane with the front edges of thejambs a .andband of the iintele. Casings 'ysuflicientl 'oibingtivisted'ont of e flat plane to conform to any devietionsjroin flatplane in the door) are secured to the front edges offlthe jambs a andthe lintel e, blocks 7c and land I V 'g and ref theimme, and tothe sillit. "A door 1y; withfiiveglafiping edges w, is hung byextended hinges iffrom the front casing g, the

edge w restn'g egaiinst the frontoi the casing y when closed; and sealedby a gasket 2:, in.

terposed betweeix the overlapping ed e wand the front of' the casings y,ettaohe to the front 05 the frame;

:3 A sfnaii doer or shuttei e is hon'i by hinges 1 iizi'its upper edgefrom the-casing y and has oyerlepping edges -2fo1i theupper edge andsidesgvhich when closed rest. upon the casing 31. The shutter, 2 hasalso a projecting 1i ;1

e inner side .of thedoo'r u When-closed, being th'us held iii'lelosedpositionhy the door at. The edges? are fitted with ket :5, similar tothat on the door u,.'exten ing across the door The dohr z is Frovidedwith e slit or cleft i whieh fits loo'se y over the suspended rail 5.This'sht isoovered with a piece of felt f or other fehriq' xtendmgdownte the gasket 2:. on the dooru, having an opening through it to fitthe rail 5, imd .with a scissor-out extending d'ownwerd to itslower end.The inner margin of the cleft 4 m the door zis rounded I greotioeilyair-tight and leav ng no apprecie le leak at any mints The front cash sy extend downwardiy be- 3 uponlow the u iper on ice of the sill h, whichsill h.

extends forwardly from the door and is beveled downwardly for a. portionof its thick uses, as shown. 111 the part marked 6 in the drewings. Thisoonstruotion of sill or threshthe packing to clear the floor in the open1347,580, dated A ril 17, 1900, and'described 'llllli 21.

- xlt'lYt' 31%, having a vortical pivot 51 fitted to old is nda )ted tobe let into the lleor,se that [he 'loor-l ramo when erected is heldsecurely at the lower end by the floor and presents no abrupt break inthe flodr to obstruct the pas saw or cause jolting of wheeled trucks orother vehicles, such joltinlq bein very damurging when occurring tocrates e eggs in enluring or leaving cold-store 0 apartments, and,further, it avoids the thin and perishable edge incident to sills orthresheldsas usually constructed and fastened upon the surlure of thefloor. The thickness of the sill iii the doorway above the level of thefloor in front thereof provides an elevated surface for vollluct withthe packing, which 'seals the lower end of the door when closed andallows position of the door. The lowcrcorner 7 of the door u isstrengthened by 'cleat 8, secured thereto to protect it from injury bycollision with trucks entering or leaving the doorway;

The door u is preferably hung flrein the easing 1 and jamb b b hingessue 1 us aredescribed and claimed 1n my Letters Patent No.

23nd shown in my tters Patent No. 697,689, uted April 15,1902.

The small door or shutter z is connected wit h am operated by the door14 by a mech-' anism ronsistin ef leversandlinks' constructed asfollows: bracket 19 is secured'to' the upper part of the door 11, andhas project'- nw arm 20, to which is pivotal! attached a Theopposite-end oft e link 2 is pivotnlly attached to a lever-arm22,turning upon a pivot 23, sup orted by a plate 'or bunring 24, secured tot e casing 3 Attached to or formed with the lever-arm22 is a slotted mun25, in the slot 26 of which a roller 27 is engaged. The roller 27 isivotally attached to the 111111.28 of an angleever 29, pivetally support0d from the plate'24. The'othr mm :m of the love-r29 is pivotallconnected with a link .i i, the opposite'end e which link is pivotidlysvcurcdte a plate 32, attahhe'dto the door 2. The link 21 is made'of twoparts 33 and 3 the part 33 fitting over the art'34 and is slotted uponone side so as to e eonlruviiblv, and is secured adjustahly on the art254. by means of a clam ing-screw 35. In order In avoid the torsionastrains upon the links '3 I ulul 3 I ,due to the axes of their pivotslN'lllfi in dill'orent ilancs, the piveteonneetin the link .2! wit 1 thearm 20 is formed in a turn in l hrnrm 2t), and the pivot connecting thelink :51 with the plate 32 is similarly l'ornw-l with a iivol. 38,littcd to" turn in a homing lit! in t io plate32, and a like con- 11l'llll ion is provided at the end of the loverii ill 3W oonsistingol' a.pivot4tl having its axis .11 righ angles to the upper pivot of the link:i. 'l w dot .50 in the cum 25 is made in radini l lllil l ltilllthe'pivut 23 through a sullio -.-i mo! of i|-: length to opi-ralo theroller'l? 0 and connected lever 28 and to impart a sulficierit motion toopen the door 2 during a movement of the door u through an arc of thirtydegrees' The remaining part of the slot 26 is in a circumferentialdirection, so that the door 2 is only operated at such time relativelyto the door it as to always close the door 2 before the upper part ofthe door 11, cont-acts with the lower end or ii 3 of the door 2 and tomove the door u clear of the uorz before the upper door z commences to Bmaking the door-framc with the lintel tongued and grooved into the jambsI am ena'bled to twist the frame into adjustment so as to fit the planeof the door when .the door is warped or sprung without opening thejoints, and h using flexible casings I am en- 'abled to ma c thisadjustment without detaching the casings.

By extending the casings below the upper surface of the 'sill I clampthem securely, so as to strengthen them in their attachment to thedoor-frame and materially brace them to' sustain the strain of thehingesattttched to the casing. I a

By attaching the hinges to the casing instead oi to the jambs of the(lOOFfiflIIlG, the

door is alw'a'ys held in proper adjustment to the casin' and the doorsand frames as fitted to can other at the factory remain in arljustmentready for erection and use.

Having described my invention, what 1 claim is l. The combination of adoor for an air-' tight apartment; a deer-frame having a port abovethe'door-opening proper and adapted to permit the passage of a rail witha free space'between its track and the upper por-- tion of said'port; ashutter hinged to e door frame above said port; said shutter having athree hout a portion of its height, whereby said sl iutter ma thei'nterspaco ii etwecn said port and the top and sidesof said rail,substantially as set forth.

2. The combination of a door for an air tight apartment; 9. door-framecomprising jambs a, and 6, a lintel e, blocks k, l, r, and g,

'a casing 3/, provided with a portwhich is adapted to permit the passageof a rail above said door with a free space between said track and theup or portion of said port; a shutter hinged to t to door-frame abovesaid port and provided with a slot extending vertically from rts loweredge throughout a portion of its height, whereby said shutter may beswung downward to close the in tei'spat'c between said port and the topand sides of said rail,

substantially as set forth.

It. The combinationof a door for an airtight apnltlmmt; odour-frametherefor pro- -vidod with a port arranged above the doorol ioning, andadapted to permit the passage a red with a free spur-e betwhon Its truckvertical slot extending from its lower edge be swung downward to closeand the up" ei' portion of said port a shutter hinged to t e door-frameabove eai art and haying a vertical slot extending to its lower edgethroughout a ortion its hei ht, the lower margin of sai shutter extendownward below the bottom of said port an into the opening for the door,but substantially flush with the face of the door-frame,

whereby saidshntter can be swung downwardly to close the interspaeebetween said 'gort and the sides and top of the-rail and the cor propercan be closed upon the lower margin of said shutter, substantially asset fort 4. A door for an air-tight apartment; a do0rframe having a portadapted to permit the assage of a suspended {ad with a free space etweenthe track thereof and the top of said port; a shutter hinged tothedoor-frame and a shutter tted to close said rt, in combination withaposi-tive means 0 openin and closing said shutter from the motion o thedoor, and arranged to elose shutter before closing the door andto openthe door before openinil the shutter as and for the purpose set fort t6. In a mechanism for operating a shutter and door for closing thedoorway of airtight apartments, a cam connected to and renew ing'moti'onitem the openin and closing of the door, and having a slot 1; ereinengaging arolier' 'oonneeted with said shutter, said slot having suchconfiguration as to impart motion to the shutter during a portion of themotion of the door and hoid the shutter in fixed position during anotherportion of suoh motion as set forth.

7. In a door-frame and door for air-tight apartments, a port for asuspended raiLtrask and a shutter fitted to open and eiose said port, inoornbination with a mechanism com 'neotmg said shutter with said doorawe-nerd to open said shutter as soon the .001 opened sufficiently toelear said shutter and to hold said shutter open during the furthezopening of the door substantially as so? forth.

8 In a refrigeratin apparatus, the combinsltion of a housing aving adoor edeoted toolose an entrance, and an opening a eve the door, piatesadapted to cover said an em ing, a iever, connections between saidpnttes and the said lever, a means for set-eating the lever and therebyopening or closing said lates simultaneous with the opening 9?? triesingof the door.

S. PRICE STEVEI'QSGE Witnesses:

C. R. MORGAN, S. LLOYD WIEGANIL

